综放工作面“两带”高度钻探实测分析

Field Measurement Analysis of"Two Belts"Height Drilling in Fully Mechanized Caving Face

为了准确测得大平煤业综放工作面“两带”高度,为水下采煤提供参考,以3108工作面为背景,采用钻探实测法,通过对两个探测钻孔的多个水文数据进行综合分析,得到3108工作面导水裂缝带发育高度为煤层顶板以上105.53~111.62 m,垮落带高度为顶板以上23.8~32 m,裂采比为19.18~19.42,冒采比为4.33~5.52。

To accurately measure the height of"Two Belts"in the fully mechanized caving face of Daping Coal Industry Co.and provide a reference for underwater coal mining,with 3108 working face as background,the paper comprehensively analyzes multiple hydrological data of two exploration boreholes by using the method of drilling measurement,and obtains that the development height of the water-conducting fracture zone of the 3108 working face is 105.53 to 111.62 m above the coal seam roof,the height of the collapse zone is 23.8 to 32 m above the roof,the crack-to-production ratio is 19.18 to 19.42,and the mining ratio is 4.33 to 5.52.